Solder? If that torch is supposed to be a flexneck, I'm not sure solder would hold the two in place. It looks to me that's a design flaw. IMHO, neck and the handle needs to be mechanically fastened if it's to be flexible. I think the overheating (if it actually happened at all) just exposed the flaw. Maybe Everlast should ask the manufacturer how they are supposed to be attached.